mic3230 Micrel Semiconductor, mic3230 Datasheet - Page 3

• Manufacturer Part Number: mic3230
• Description: Constant Current Boost Controller For Driving High Power Leds
• Manufacturer: Micrel Semiconductor

Pin Configuration
Pin Description
Micrel, Inc.
January 2009
PWMD
COM P
IADJ
VIN
EN
Pin Number
3x3MLF
1
2
3
4
5
10
11
12
MSOP-10 (MM)
--
--
--
--
--
1
2
3
4
5
6
7
8
9
MIC3232
Pin Number
TSSOP-16L
10
11
12
13
14
15
16
--
1
2
3
4
5
6
7
8
9
10 VDD
9
8
7
6
DRV
PGND
OVP
IS
Pin Number
MSOP-10L
10
See Product Option Matrix for selection
--
--
--
--
--
--
--
1
2
3
4
5
6
7
8
9
PWMD
COMP
IADJ
VIN
EN
FS
3mmx3mmMLF
4
5
6
1
2
3
Pin Name
MIC3230, MIC3231
PWMD
COMP
AGND
PGND
SYNC
EPAD
IADJ
OVP
DRV
VDD
VIN
NC
NC
NC
EN
FS
IS
EPAD
3
®
Pin Function
No Connect
Input Voltage (power) 6V to 45V
Enable Control (Input). Logic High (≥1.5V) enables
the regulator. Logic Low (≤0.4V) shuts down the
regulator. Connect a 100kΩ resistor from EN to VIN.
PWM input. High signal terminates the output
power. Low Signal starts up the output power.
Compensation (output): for external compensation
Feedback (input)
Frequency Select (input). Connected to a Resistor
to determine the operating frequency
Analog Ground
No Connect
Sync (output). Connect to another MIC3230 to
synchronize multiple converters.
Current Sense (input). Connected to external
current sense resistor which in turn is connected to
the source of the external FET as well as an external
slope compensation resistor
OVP divider connection (output). Connect the top of
the divider string to the output. If the load is
disconnected, the output voltage will rise until OVP
reaches 1.25V and then will regulate around this
point
Power Ground
Drive Output: connect to the gate of external FET
(output)
VDD Filter for internal power rail. Do not connect an
external load to this pin. Connect 10µF to GND.
No Connect
Connect to AGND
-12L (ML)
12
11
10
9
8
7
VDD
DRV
PGND
OVP
IS
SYNC/NC
See Product Option Matrix for selection
PWMD
COMP
AGND
IADJ
N/C
VIN
EN
FS
1
2
3
4
5
6
7
8
MIC3230, MIC3231
TSSOP-16 (TSE)
EPAD
M9999-011409-A
MIC3230/1/2
16 N/C
15
14
13
12
11
10
9
VDD
DRV
PGND
OVP
IS
SYNC/NC
N/C